package com.lingkun.demo.utils;

import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.HttpServletRequest;

public class IpUtils {
    /**
 * 获取Ip地址
 */
public static String getIpAddress(HttpServletRequest request) {
    String Xip = request.getHeader("X-Real-IP");
    String XFor = request.getHeader("X-Forwarded-For");
    if (StringUtils.isNotEmpty(XFor) && !"unKnown".equalsIgnoreCase(XFor)) {
        //多次反向代理后会有多个ip值，第一个ip才是真实ip
        int index = XFor.indexOf(",");
        if (index != -1) {
            return XFor.substring(0, index);
        } else {
            return XFor;
        }
    }
    XFor = Xip;
    if (StringUtils.isNotEmpty(XFor) && !"unKnown".equalsIgnoreCase(XFor)) {
        return XFor;
    }
    if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
        XFor = request.getHeader("Proxy-Client-IP");
    }
    if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
        XFor = request.getHeader("WL-Proxy-Client-IP");
    }
    if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
        XFor = request.getHeader("HTTP_CLIENT_IP");
    }
    if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
        XFor = request.getHeader("HTTP_X_FORWARDED_FOR");
    }
    if (StringUtils.isBlank(XFor) || "unknown".equalsIgnoreCase(XFor)) {
        XFor = request.getRemoteAddr();
    }
    return XFor;
}
}